Variations of Compact Rectangular Microstrip Antennas Using Defected Ground Plane Structure

Compact wideband microstrip antennas using C, H, and W‐shape ground plane for GSM band applications

“…A slot on the ground plane provides optimum control of the input impedance at the fundamental mode with an equivalent amount of frequency reduction. 14 Hence, in this study ground plane slot is considered.…”

“…To obtain maximum frequency reduction in the W-shape design, slots on the top horizontal edge are placed at l x = L/4, from the patch center. 14 An optimum design is realized by employing the parametric study for the increase in W s against the increase in BW, reduction in TM 10 mode frequency and reduction in the gain. The optimum design has the antenna parameters as, W s = 3.0, W gs = 2.1, L s = 0.5, l x = 2.1, h a = 2.4, h s = 2.3, X f = 3.0, W pf = L pf = 1.0 cm.…”

“…To realize reduction in the frequency, slot is embedded at the maximum current location of the fundamental mode on the patch or on the ground plane that lies exactly below the patch center. A slot on the ground plane provides optimum control of the input impedance at the fundamental mode with an equivalent amount of frequency reduction 14 . Hence, in this study ground plane slot is considered.…”

“…The effects of a W‐shape ground plane are further investigated to realize a wideband compact design. To obtain maximum frequency reduction in the W‐shape design, slots on the top horizontal edge are placed at l x = L/4, from the patch center 14 . An optimum design is realized by employing the parametric study for the increase in W s against the increase in BW, reduction in TM 10 mode frequency and reduction in the gain.…”